let e be the ellipse with major and minor radii a and b respectively, and pbe its perimeter, then p = lim 4 tan(p/n)(a + b + 2) σ a2 cos2 (2k-2)pi/n+ sin2 (2k-2)pi/n; where n = 2m. so without considering the limit, it gives a reasonable approxi-mation for p, it means that we can choose n large enough such that the amountof error be less than any given small number. on the other hand, the formul...

The weighing records of 18 crossbred females with average live weight of 14.7 ± 3.14 kg were analyzed to study the relationship of the growth of crossbred hair sheep with some zoometric measures. The weight was established and took the measures thoracic perimeter, cannon perimeter, body length, neck length, hip amplitude, ischial amplitude, withers height and croup height. All parameters were s...

a three day old neonate was referred to our department with a problem of a sternal cleft. sternal clefts are often associated with a myriad of other abnormalities ranging from mild to severe. we present our experience with such a problem, and review the current literature concerning it.

X-ray chest radiographs produce digital radiographic images of the area such as lungs, heart and ribs. This image can visualize lung condition patients with COVID-19. The Edge Detection technique see edges objects in lungs COVID-19 more clearly. are damaged due to GGO (Ground Glass Opacity) COVID-19, namely there is white fog, look blurry at or areas affected by disease also affect ​​​​the area...

2014 Exact expansions for susceptibility 2014 like mean perimeter series for directed percolation and extended mean size series are analysed, on two and three dimensional lattices. The critical threshold pc estimates are refined for the triangular and simple cubic lattices. On the square next-nearest-neighbour site problem pc is estimated as pc = 0.4965 ± 0.002. J. Physique 47 (1986) 943-946 JU...